Resilient mounting for bobbin magazines



1949 v c. P. BERGSTROM 2,490,402

RESILIENT MOUNTING FOR BOBBIN MAGAZINES Filed Sept. 18, 1948 INVENTOR CARL P. BE RGSTROM ATTORNEY Patented Dec. 6, 1949 RESILIENT MOUNTING FOR BOBBIN MAGAZINES Carl P. Bergstrom, Millbury, Mass, assi'gnor to Crompton & Knowles Loom Works, Worcester; Mass, a corporation of Massachusetts Application September 18, 1948, Serial No; 49,915

11 Claims. 1

This invention relates to improvements in weft replenishing looms and it is the general object of the invention to provide an improved resilien-t mounting for a reserve bobbin which will permit the latter to assume two operating posiions.

In weft replenishing looms of the multicolor type it is customary to provide a magazine in which several stacks of reserve bobbins are held in readiness for transfer into the several shuttles of the loom. In a form of loom which has gone into general use for the weaving of fine or light weight fabrics the magazine has two stacks of bobbins and can rock from one position to another to place the lowest bobbin ineither stack in transfer position. The magazine is ordinarily placed so that the lowest bobbin of one stack can be transferred without rocking of the magazine, and if transfer of the lowest bobbin of the other stack is required the magazine is then rocked, after which it returns to its normal position.

It is an important object of the present invention to provide mounting means for the mega zine including a stationary part and a part moving with the magazine connected to the stationary part by aninherently resilient material, such as rubber or the like, which acts by reason ofits resilience to hold the magazine in one of its operating positions, but permits rocking of the magazine to its other operating position.-

It is another object of the invention to connect the inner and outer reserve bobbin guiding plates of the magazine by a single rigid connector means and attach the latter to a stationary loom supported part by a non-metallic inherently resilient material which not only serves to return the magazine to its normal position but also arrests vibration of the magazine and the bob bins therein during loom operation.

With these and other objects in View which will appear as the description proceeds. the invention resides in the combination and arrangement oi parts hereinafter described and set forth.

In the accompanying drawings, wherein a convenient embodiment of the invention is set forth,

Fig. 1 is a side elevation of the upper left hand forward part of a weft replenishing loomhaving the invention applied thereto, parts of the lay being shown in cross section,

Fig. 2 is an enlarged front elevation looking in the direction of arrow 2, parts of the magazine end plates being broken away,

Fig. 3 is an enlarged vertical section on line 3-3, Fig. 2, I

Fig. 4 is an enlarged fragmentary horizontal section on line 4-4, Fig. 2.

Fig; 5 is a reduced transverse section on line 55, Fig. 4, and,

Fig. 6 is an enlarged detail top plan view looking in the direction of arrow 6, Fig. 2.

Referring particularly to Fig. 1, the loom frame to includes a breast beam l I having mounted thereon a support I 2 held rigidly to the breast beam as at l3. A- brace or connector M is interposed between a part of the loom frame and the upper right hand part I-5 of the support I2 so that the latter is held in rigid. position with respect to the loom frame.

The reserve bobbin magazine M has inner and outer plates 20 and 2|- shown at the left and right, respectively, of Fig. 21 for guidance of reserve bobbins as the latter mov'e downwardly by gravity toward transfer position. The magazine as set forth herein is provided with front and back stacks of reserve bobbins BI and B2. The inner plate 20 guides the butts 22 of the bobbins of the two stacks, while the outer plate 2| guides the bobbin tips 23. At the bottom of each stack the plate 20 is providedwith a yieldable butt support 24. one support 24 being shown in Fig. 2. Similarly, the bottom of outer plate H has yieldable bobbin tip supports designated generally at 25.

The stationary support l2 has mounted thereon a stud 26 on which is pivotally mounted. a transferrer arm 21 the lower end of which. has pivotal connection with a latch 28 for operation by a hunter 29 on the lay 30. The latter is pro+ videdwith a shuttle box 3| to receive the two shuttles of the loom, one at a time. In Fig. 1 one of these shuttles is designated at S. When the weft in a shuttle in shuttle box 31 is replenished the latch and buriter eoactto: effect clockwise rocking of the transferrer arm 21, Fig-.- 1, to push the lowest bobbin one or the other ofthe bobbin stacks into the shuttle the lay advances, or moves to'the left,,Fig'. 1.

The magazine is ordinarily at rest with the lowest bobbin in rear stack B2 in positionfor transfer. If the lowest bobbin in the other stack is to be transferred the magazine is rocked.- In order to rock the magazine a rod 32 is connected thereto as at 33 and to a lever 34 operatively con nected to a depending red 35 extending to mechanism not shown herein but acting automatically to lower the rod to rock: the magazine.

The matter thus far described exceptas noted hereinafter is of commonconstruction and oper ates in the usual manner.-

Referring more particularly to Fig. 2, the support I2 has an upright horn 35 supporting a foot 31 having vertical slots 38 through which extends screws 46 tapped into the horn. The foot 31 is integral with a bracket or arm 4! which extends through an opening 42 in the inner magazine plate 20 and is provided with a bearing hub 43 having a horizontal axis substantially parallel to the bobbins in the magazine. This hub has extending therethrough an elongated cylindrical support stud 44 which is held in longitudinally and angularly adjusted position in the hub by set screws or the like 45. The stud 44, which may be considered the immediate support or mounting means for the magazine, is thus held rigidly in adjusted position with respect to the loom frame and does not move angularly when the magazine rocks.

The two end plates of the magazine are held together by a carrier or support member designated generally at 45 including in its construction an elongated preferably parti-cylindrical rigid or metallic connector 50. Each end of the latter has mounted thereon a set of parts for attachment to one of the end plates and to stud artificial rubber, is bonded as at 55 to the inner a surface of the shell 53, and is also bonded as at 56 to a metallic sleeve 51 surrounding and having a tight fit with a reduced end 58 formed on stud 44. A nut 59 threaded on reduced end 58 forces the sleeve against a shoulder 6| on stud 44, and a lock nut 60 holds the setting of nut 59. The bodies R are the mounting means by which the magazine is held to the support stud 44.

The ring bearing has formed preferably integrally therewith a foot or plate 65 which is secured by screws 66 to the web 61 of the outer plate 2| of the magazine. By this construction the connector 50 is fastened rigidly to the end plate 2|, but resiliently to the stationary stud 44.

The set of parts at the left of stud 44, Fig. 2, is the same as that already described except of the opposite hand, and affords means by which the inner magazine plate 20 is fastened to the connector 50. r

The bracket 4| has an upwardly extending stop arm located between rear and front stop or positioning heads H and 12, respectively, shown in Fig. 6. Each head is formed preferably of a material similar to that of which body R is formed and is bonded to a screw 13 threaded through a small bracket 14 held as at to the end plate '20. A check nut [6 permits adjustment of each stop head in a direction toward and from the stop arm 10. The stop heads afford resilient limiting means for angular motion of the magazine as it rocks about the stationary stud 44.

In order that the resilient bodies R may be under some internal strain when the magazine is in normal position the head 12 is backed oiT or moved in a forward direction away from stop arm 10 while set screws 45 are loose. Head 12 is so set that it will notengage the stop until the magazine is rocked to a position in which the bottom bobbin of the rear bobbin stack B2 will be slightly forward of its correct position for transfer. The set screws 45 are then tightened. The stop head 12, while engaging the stop, is then turned so as to move rearwardly relatively to plate to rock the magazine until the bottom bobbin in the rear stack B2 is correctly placed for transfer. The angular movement of the magazine incident to this last adjustment will place the resilient bodies R under some strain which will enable them to hold the magazine normally with the head 12 against the stop 10, that is, the bodies R tend to turn the magazine clockwise as viewed in Fig. 1. During rocking of the magazine there is motion of some parts of the bodies R relative to stud 44 and the bearing rings, but there is not bodily movement of bodies R as a whole with respect to the parts to which they are bonded.

The head II is then adjusted to arrest angular movement of the magazine in a counterclockwise direction as viewed in Fig. 1, when the magazine is rocked to place the lowest bobbin in the front stack Bl in transfer position. This rocking of the magazine will place the resilient bodies under some further internal strain or stress, and when rod is permitted to rise the magazine will rock back to its normal position.

In addition to the angular adjustment of stud 44 just described, the set screws permit horizontal adjustment of stud 44 and the magazine to place the butts of the bobbins in correct registry with the transfer arm 21.

From the foregoing it will be seen that the invention sets forth a simple resilient mounting for the magazine M enabling the latter to be rocked to two operating or transfer positions due to yielding of the resilient bodies R. The latter not only support the weight of the magazine, but also reduce vibration of the magazine and the bobbins in it during loom operation. The tight fit between stud 44 and sleeve 5'! enables the resilient material to return the magazine to its normal position after it has been rocked by rearward movement of rod 32. The support afforded the stud 44 by hub 43 permits endwise adjustment of the magazine in a direction toward and from the adjacent loom frame 10 and support l2 without in any way disturbing the resilient connections between the connector and the stud 44. It will be desirable to have the resilient bodies R under some internal stress when the magazine is in its normal position to insure full return of the magazine to that position. This can be attained by adjusting the stop head 12 as described hereinbefore with respect to the stop Ill. The stud 44, bodies R, ring bearings 5| and the connector 50, constitute a connector unit which is not necessarily limited in its use to the particular types of magazine end plates shown.

Having thus described the invention it will be seen that changes and modifications of the foregoing specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

1. In a weft replenishing loom, an angularly rockable reserve bobbin magazine, stationary magazine supporting means, and magazine mounting means made of soft inherently resilient material operatively interposed between the magazine and supporting means and supporting the weight of the magazine and having parts thereof held against relative movement with respect to the magazine and having other parts thereof held against relative movement with respect to the supporting means, said mounting means yielding on itself due to the inherent resilience thereof when the magazine rocks and tending to hold the magazine in a givenangular position.

2. In a weft replenishing loom having a frame, a rockable reserve bobbin magazine including two spaced bobbin guiding end plates, said plates being different distances from the loom frame and the plate adjacent to said frame having an opening therein, bracket means fixed with respect to the loom frame and extending through said opening to a position between said end plates, an elongated support member between said end plates held in angularly and longitudinally adjustable position with respect to said bracket means, a bearing means secured to each end plate, means connecting said bearing means causing the end plates to move angularly in unison, and mounting means between said bearing means and said elongated member, said mounting means being made of soft inherently resilient material, part of said resilient mounting means being a reserve bobbin magazine including two spaced bobbin guiding end plates, one of said plates having an opening therein, bracket means fixed with respect to the loom frame extending through said opening to a position between said plates, an elongated support member held in angularly and longitudinally adjusted position on the bracket means, a resilient magazine mounting element at each end of said elongated member, each element having parts thereof held against relative bodily movement with respect to the member, bearing means surrounding each mounting means held against relative bodily movement with respect to the latter, one bearing means for each end plate and each bearing means being secured to the corresponding end plate, and a connector joining said bearing means and causing the latter and the end plates to move angularly in unison, said resilient mounting elements due to the resilience thereof permitting angular movement of the magazine relatively to said elongated support member and tending normally to hold said magazine in a given angular position.

4. In a weft replenishing loom, a rockable magazine having spaced bobbin guiding end plates, an elongated support member extending between said plates, means mounting said member in fixed position with respect to the loom, a magazine mounting for each end of said elongated member, each magazine mounting being made of soft inherently resilient material part of which is held against bodily relative movement with respect to the elongated member, a bearing for each megazine mounting held against bodily relative movement with respect to the latter and operatively connecting the associated magazine mounting to the corresponding end plate, and means connecting the bearings to each other, said magazine mounting means due to the inherent resilience thereof permitting angular movement of the magazine relative to the elongated member and tending normally t'OhOIcT the magazine a given angular" position.

5. Ina weft replenishing loom, a reserve bobbin magazine having two spaced bobbin guiding end plates, a bearing secured to each end plate, a cylindrical elongated support member extending between said plates, stationary means with respect to which said elongated member is held fixed in angularly and longitudinally adjusted position, and resilient mounting means operatively connecting said elongated member and said bearings on the end plates, said resilient mounting means being made of soft inherently resilient material parts of which are held against bodily angular movement with respect to said elongated member and other parts of which are held against relative bodily movement with respect to said bearings, said resilient mounting means due to the inherent resilience thereof permitting angular movement of the end plates relatively to the elongated member and tending normally to hold the magazine in a given angular position.

6. In a weft replenishing loom, a reserve bobbin magazine including two spaced bobbin guiding end plates, a bearing member secured to each end plate, a body of soft inherently resilient material held to each bearing member against bodily relative movement with respect thereto, and support means for said resilient bodies extending between the plates and held against bodily relative movement with respect to said resilient bodies.

7. In a weft replenishing looml a reserve bobbin magazine including two spaced bobbin guiding end plates, two bearings secured to each other and to the end plates, one bearing to each plate, a body of soft rubber held to each bearing member against bodily relative movement with respect thereto, support means for said rubber bodies extending between the plates and held against bodily relative movement with respect to said resilient bodies, and stationary means mounting said support means in fixed position, said rubber bodies due to the inherent resilience thereof permitting angular movement of the magazine with respect to said support means and tending to hold the magazine in a given angular position with respect to said support means.

8. A connector unit for the end plates of a reserve bobbin magazine, said unit comprising an elongated support member, a body of soft inherently resilient material mounted on each end of said member and held against bodily relative movement with respect thereto, a bearing for each end plate, each bearing having provision for attachment to the corresponding magazine end plate and held against bodily movement relatively to the associated body of resilient material, and means rigidly connecting said bearings together.

9. A connector unit for the bobbin guiding end plates of a reserve bobbin magazine for a loom having a fixed bearing hub, said unit comprising a cylindrical elongated support member adapted for mounting on said bearing hub, a body of soft inherently resilient material supported at each end of said elongated support member and held against bodily relative movement with respect to said support member, a bearing for each of said bodies of inherently resilient material, each bearing held against bodily relative movement with respect to the corresponding body, each bearing having provision for attachment to the associated magazine end plate, and means parallel to said member rigidly connecting said bearings together.

10. In mounting means for the spaced bobbin guiding end plates of a loom reserve bobbin magazine, said mounting means comprising a cylindrical elongated support member, a sleeve held against angular movement with respect to the elongated member at each end of the latter, a body of soft elastic rubber bonded to each sleeve, a shell bonded to each body of rubber, a bearing secured to each shell, each bearing having provision for attachment to the corresponding end plate, and means rigidly connecting said bearings together.

11. In a weft replenishing loom, a rockable reserve bobbin magazine including two spaced bobbin guiding end plates, means securing said plates together, stationary support means on the loom, soft inherently resilient mounting means operatively connecting said stationary support means and the end plates tending to hold the magazine in a given angular position, a stationary stop element, a stop element on and moving with the magazine, and soft inherently resilient positioning means on one of said stop elements for engagement with the other stop element, the mounting means due to the inherent resilience thereof holding the magazine in said given position with the resilient positioning means engaging one of said stop elements, said magazine being connected to the 100m only by means of said soft inherently resilient mounting means and said inherently resilient positioning means.

CARL P. BERGSTROM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,437,627 Turner Mar. 9, 1948 2,455,149 Turner Nov. 30, 1948 

